Tempesta Izamara Fonseca, Leandro Wilson Mozena, Severino Maico Roris, Calil Francine Neves, Sette-Junior Carlos Roberto, de Castro João Paulo Vilela, Muniz Mariane Porto, de Souza Amanda Oliveira, de Madureira Géssica Carvalho
School of Agronomy, Federal University of Goiás, Campus Samambaia, Goiânia, Goiás, Brazil.
Federal Institute of Education, Science and Technology Goiano, Campus Rio Verde, Rio Verde, Goiás, Brazil.
Environ Geochem Health. 2025 Jun 27;47(8):288. doi: 10.1007/s10653-025-02609-3.
Phytoremediation using energy crops offers both environmental and energy-related benefits; however, its effectiveness in soils contaminated with nickel (Ni) and chromium (Cr) due to serpentinite mining requires further investigation. This study aimed to assess the potential of energy crops for the phytoremediation of soil contaminated by serpentinite mining activities. The experiment was conducted using soil from a former chromite mining area in serpentinites, which was operational between 1945 and 2010, in the municipality of Cromínia, State of Goiás, Brazil. A randomized block design was adopted, comprising five treatments with four replicates: energy cane, sugarcane, capiaçu grass, elephant grass, and spontaneous flora. The total concentrations of Ni and Cr in the soil were quantified. In plants, shoot and root biomass production, Ni and Cr accumulation, and energy productivity were evaluated. The translocation factor and bioconcentration factor for the metals were determined. Data were subjected to analysis of variance and the Scott-Knott test. Sugarcane exhibited the highest biomass production and energy productivity. Reductions in total Ni and Cr concentrations in the soil were observed at 58% and 22%, respectively, which may be associated with metal retention in the roots through phytostabilization. By ensuring high biomass yields, enabling renewable energy production, preventing metal transfer to other environments and organisms, and providing socioeconomic benefits, the cultivation of energy crops presents a sustainable alternative for the phytoremediation of decommissioned serpentinite mining areas.
利用能源作物进行植物修复具有环境和能源相关的双重效益；然而，其在因蛇纹岩开采而受镍（Ni）和铬（Cr）污染的土壤中的有效性仍需进一步研究。本研究旨在评估能源作物对蛇纹岩开采活动污染土壤进行植物修复的潜力。实验采用了巴西戈亚斯州克罗米尼亚市一个 former chromite 矿区的土壤，该矿区在1945年至2010年间运营，土壤来自蛇纹岩。采用随机区组设计，包括五个处理，每个处理四个重复：能源甘蔗、甘蔗、卡皮亚苏草、象草和自生植物群落。对土壤中镍和铬的总浓度进行了定量分析。在植物方面，评估了地上部和根部生物量的生产、镍和铬的积累以及能源生产力。测定了金属的转运因子和生物富集因子。数据进行方差分析和 Scott-Knott 检验。甘蔗表现出最高的生物量生产和能源生产力。土壤中镍和铬的总浓度分别降低了58%和22%，这可能与通过植物稳定作用使金属保留在根部有关。通过确保高生物量产量、实现可再生能源生产、防止金属转移到其他环境和生物体以及提供社会经济效益，能源作物的种植为退役蛇纹岩矿区的植物修复提供了一种可持续的替代方案。
